Outside Speaker And Microphone Installation And Cable Connections; Microphone - HME Wireless 6000 Installation Instructions Manual

2.3.3 Outside Speaker and Microphone Installation
and Cable Connections
This section describes standard, full-duplex installations, using the standard microphone
and the SP2500LP Low-Profile Speaker. Specific installation requirements may vary.
Refer to the wiring diagrams on pages 25 — 28 for cable connections.
Although the standard microphone and SP2500LP will provide optimum performance, in
some cases the DM1 Microphone may be used. For DM1 installation instructions, see
Appendix E.
NOTE: For half-duplex installations, see Appendix D for installation of the SP2000A
Speaker/Microphone Unit. The SP2000A is used as the speaker and microphone in
half-duplex installations.
In order to avoid audio feedback, the speaker unit must be mounted at least 2 feet (610 mm)
from the microphone unit. Positioning of the two units is critical.
The microphone unit must be mounted inside the speaker post or menu board, against the
speaker grill. It should be installed first, so it can be positioned where the customer will be
speaking directly into it. The speaker unit can then be installed anywhere around the
microphone unit, as long as they are at least 2 feet (610 mm) apart, center-to-center.
This distance may vary according to specific conditions.
NOTE: Try the system with the speaker unit at various locations before permanently
mounting it. If it is not positioned correctly, feedback may occur. If this happens,
reposition the speaker at other locations around the microphone unit until the feedback
disappears. If possible, park a vehicle in front of the post to simulate echo conditions
that may also cause feedback.
1. Installing the Microphone
Typical microphone installation involves mounting the unit with the enclosed
foam pieces, inside the upper compartment of the speaker post. The foam will fit
many types of speaker posts and menu boards. If the microphone must be mounted
in a small area, compress the foam when installing it and closing the speaker post or
menu board. In larger areas, additional foam (not supplied) must be added.
To install the microphone in a typical speaker post, follow the instructions on page 14
and refer to Figure 13. Installation in a menu board will be similar, within the menu-
board speaker compartment.
Figure 12. Microphone
13